Home / 21,335.04-29,434.08-12,954.24

Finding the Fourth Proportional to 21,335.04, 29,434.08 and 12,954.24

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Solution

The fourth proportional to 21,335.04, 29,434.08 and 12,954.24 is: 17,871.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,335.04 : 29,434.08 = 12,954.24 : x
  2. Step 2: Convert to fraction form
    21,335.04/29,434.08 = 12,954.24/x
  3. Step 3: Cross multiply
    21,335.04x = 29,434.08 × 12,954.24
  4. Step 4: Simplify right side
    21,335.04x = 381,296,136.50
  5. Step 5: Solve for x
    x = 381,296,136.50/21,335.04
  6. Step 6: Final answer
    x = 17,871.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.